/*
 * Kimios modern login page — 2026-04-23
 * Vanilla HTML5 + modern CSS. No framework, no ExtJS.
 * Replaces the 2011-era ExtJS login form. Responsive ≥360px.
 */

:root {
  --k-green-500: #6CCA18;
  --k-green-600: #5CB312;
  --k-green-700: #4A9A0B;
  --k-green-050: #F2FBE8;
  --k-ink-900: #1A1F1A;
  --k-ink-700: #3A4038;
  --k-ink-500: #5F665E;
  --k-ink-300: #A8AFA6;
  --k-surface: #FFFFFF;
  --k-surface-alt: #F6F7F5;
  --k-border: #D8DDD5;
  --k-danger: #C0392B;
  --k-danger-bg: #FBEAE8;
  --k-shadow-sm: 0 1px 2px rgba(26, 31, 26, 0.06), 0 1px 1px rgba(26, 31, 26, 0.04);
  --k-shadow-md: 0 10px 30px rgba(26, 31, 26, 0.10), 0 4px 10px rgba(26, 31, 26, 0.06);
  --k-radius: 10px;
  --k-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --k-ink-900: #EEF1EC;
    --k-ink-700: #C8CEC3;
    --k-ink-500: #8A9187;
    --k-ink-300: #5A6057;
    --k-surface: #1C201B;
    --k-surface-alt: #24291F;
    --k-border: #2E3329;
    --k-danger-bg: #3A1916;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  font-family: var(--k-font);
  color: var(--k-ink-900);
  background: radial-gradient(1200px 700px at 20% -10%, var(--k-green-050) 0%, transparent 60%),
              radial-gradient(900px 600px at 90% 110%, rgba(108, 202, 24, 0.14) 0%, transparent 60%),
              var(--k-surface-alt);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.k-login-page {
  min-height: 100vh;
  display: grid;
  grid-template-rows: 1fr auto;
  padding: 24px;
}

.k-login-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.k-login-card {
  width: 100%;
  max-width: 420px;
  background: var(--k-surface);
  border: 1px solid var(--k-border);
  border-radius: var(--k-radius);
  box-shadow: var(--k-shadow-md);
  padding: 32px 32px 24px;
}

.k-login-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 24px;
}

.k-login-brand img {
  width: 96px;
  height: auto;
  margin-bottom: 12px;
}

.k-login-title {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--k-ink-900);
  margin: 0;
}

.k-login-subtitle {
  font-size: 0.875rem;
  color: var(--k-ink-500);
  margin: 4px 0 0;
}

.k-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
}

.k-field label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--k-ink-700);
}

.k-field input,
.k-field select {
  appearance: none;
  -webkit-appearance: none;
  width: 100%;
  padding: 10px 12px;
  font: inherit;
  font-size: 0.9375rem;
  color: var(--k-ink-900);
  background: var(--k-surface);
  border: 1px solid var(--k-border);
  border-radius: 8px;
  transition: border-color 120ms ease, box-shadow 120ms ease;
}

.k-field select {
  background-image: linear-gradient(45deg, transparent 50%, var(--k-ink-500) 50%),
                    linear-gradient(135deg, var(--k-ink-500) 50%, transparent 50%);
  background-position: calc(100% - 18px) 50%, calc(100% - 13px) 50%;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  padding-right: 32px;
}

.k-field input:hover,
.k-field select:hover {
  border-color: var(--k-ink-300);
}

.k-field input:focus,
.k-field select:focus {
  outline: none;
  border-color: var(--k-green-600);
  box-shadow: 0 0 0 3px rgba(108, 202, 24, 0.22);
}

.k-field input[aria-invalid="true"],
.k-field select[aria-invalid="true"] {
  border-color: var(--k-danger);
}

.k-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 4px 0 18px;
  font-size: 0.8125rem;
  color: var(--k-ink-500);
}

.k-remember {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  user-select: none;
}

.k-remember input {
  width: 16px;
  height: 16px;
  accent-color: var(--k-green-600);
  margin: 0;
}

.k-btn-primary {
  width: 100%;
  padding: 11px 14px;
  font: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  color: white;
  background: var(--k-green-600);
  border: 1px solid var(--k-green-700);
  border-radius: 8px;
  cursor: pointer;
  box-shadow: var(--k-shadow-sm);
  transition: background-color 120ms ease, transform 80ms ease;
}

.k-btn-primary:hover { background: var(--k-green-700); }
.k-btn-primary:active { transform: translateY(1px); }
.k-btn-primary:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(108, 202, 24, 0.35);
}
.k-btn-primary[disabled] {
  background: var(--k-ink-300);
  border-color: var(--k-ink-300);
  cursor: progress;
}

.k-error {
  display: none;
  margin: 0 0 14px;
  padding: 10px 12px;
  font-size: 0.8125rem;
  color: var(--k-danger);
  background: var(--k-danger-bg);
  border: 1px solid var(--k-danger);
  border-radius: 8px;
}

.k-error[data-visible="true"] { display: block; }

.k-login-footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  font-size: 0.75rem;
  color: var(--k-ink-500);
  padding-top: 16px;
}

.k-login-footer code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.6875rem;
  color: var(--k-ink-500);
}

.k-sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 480px) {
  .k-login-card { padding: 24px 20px; border-radius: 0; border-left: 0; border-right: 0; max-width: none; }
  .k-login-page { padding: 0; }
  .k-login-center { align-items: flex-start; padding-top: 48px; }
}